Check gauges on 2002 Chevrolet Trailblazer

just noticed that my check gauges light would go on then cut off back and forth. I looked at my gauges and noticed that my oil pressure gauge will be fine then fall then jump back to normal. What do you think?

by in Abbeville, LA on December 23, 2010
1 answer 1 comment
ANSWER by on December 24, 2010
i would start by changing the oil pressure switch on the engine.
COMMENT by on December 30, 2010
When I am idleing it drops , then when I give the gas it jumps back to normal ...... Is an oil pressure switch expensive usually?
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